Baknim f



(No M0161.)

B. F. ORTMAN. 111131 COLLECTOR.

No, 361,232. Patented Apr. 12, 1887;

IIIIIIIII UNITED STATES PATENT OFFICE.

BARNIM F. ORTMAN, OF BUFFALO, NEW YORK.

D UST-COLLECTO R.

SPECIFICATION forming part of Letters Patent No. 361,232, dated April 12, 1887.

Application filed June S, 1886. Serial No. 204,518. (No model.)

To all whom/'it may concern,.- Beit known that I, BARNIM F.. ORTMAN, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Dust-Collectors, of which the following is a specification.

Thisinvention relates to a dust-collector in which the dust is separated from the air by the momentum of the dust particles, which latter are permittedto continue this motion and to enter a chamber provided for their reception, while the air is deflected out of its course and escapes-in another direction. A

machine of this'kind is described and shown this light dust by means of supplemental or' auxiliary dust-collecting devices.

My invention consists, to that end, of' the improvements which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure l is a sectional elevation'of my improved dust-collector. Fig. 2 is a horizontal section in line x x, Fig. l. Fig. 3 is a cross-section, on an enlarged scale,in line y y, Fig. 1.

Like letters of reference refer to like parts in the several figures.

A represents the lair-spout, throughwhich the dust-laden air enters the machine, and which is connected with the spout through which the air is discharged from the middlingspurifier, grain-separator, or other machine.`

B represents a spiral air-passage forming a y continuation of theg'spout A and having its outer vertical wall, b, constructed of perforated metal, wire-gauze, or other similar perforated material, while its inner wall, c, is

constructed of wood, sheet metal, or other im' perforated material. The inner end of the spiral air-passageB connects with a spout, D, through which the air is discharged from the machine after the dust has been separated from the air.

f represents upright boards or partitions arranged in the chamber E, between the perforated wall b and the outer tight wall, e, to break the continuity of the chamber E and prevent the air from tlowing through the same along the outer wall, c.

G represents the tight top plate of the 'machine, covering the air-passage B and chamber E, and provided at the center with an opening, g, with which the air-discharge spout D connects.

h represents the bottom plate ofthe air-passage B, made preferably of perforated metal; but, if desired, it may be made imperforate.

.K represents a hopper or other suitable receptacle arranged underneath the chamber E, for the reception ofthe material which passes into said chamber. The hopper K is tightly connected with the circumferential wall e of the chamber E and provided with a dischargespout, L, which is trapped bya weighted valve, Z, a'conveyer, or some other suitable contrivance, so as to prevent air-currents from pass-y ing through the'hopper.

The innermost or tail portion of the outer' wall, b, of the spiral air-passage B is made imperforate, as shown at m, and is provided on its inner side with a spiral ilangeor deflector, M, inclined downwardly.

N is an inverted conical receiver securedin. an opening of the bottom plate, h, underneath the inner end of the spiral air-passage B, and hav-ing at its lower end an opening, u, through which the material passes from the receiver N into the receptacle K, which latter inclosesthe receiver N. Any dust particles which remain suspended in the air-current after .the latter has passed beyond the inner end of the perforated wall b of the spiral air-passage B are thrown by their momentum against the imperforate curved wall mand deliecte'd by the spiral flange M into the conical receiver N.. The

ange- M is preferably provided on its edge.-

with an overhanging lip, m', which prevents dust particles from escaping at the inner edge of the flange. The receiver N, communicating ICO at its upper end with the air-spout and at its provided w downwardly through the receiver N and preventstrong air-currents from passing upwardly through the receiver.

The air-discharge spout D is composed of a vertical portion, d, and a horizontal portion, d', connected by an elbow or knee. zontal portion d horizontal portiond the spout, and connects therewith by an opening, q. The dellecting-collar l? is secured to the spout D in the rear of or beyond the opening q, and has its lower portion provided with a lip, p, extending in a forwardly-inclined position over said opening, as shown in Fig. 1. The aircurrent,moving upwardly through the vertical portion d of the pipe D,rebounds from the upper portion horizontal portion d', near the opening q. An y dust particles still contained in the outgoing air-current are intercepted by the collar I? and deflected downwardly into the receiver Q. The

latter is preferably provided with a dischargepipe, q', which opens by a trapped discharge, q, into the main dust-receiver K; or, if desired, the receiver Q may be provided with a separate discharge independent of the main receiver. The.dischargepipe q is preferably made flaring toward its bot-tom, as represented in Fig. 3, to prevent the material from lodging in the pipe.

The bulk of the dust is separated from the air in the spiral passage B, and any light material which has not been separated from the air in said passage is intercepted by the deflectors M and l), and collected in the receivers arranged underneath said dellectors.

I claim as my invention- 1. In a dust-collector, the combination, with a dust-separating passage, of a concave deileeting-wall, a spiral defleeting-flange secured to the inner side of said wall, and a receiver into which the dust is deflected by said flange, substantially as set forth.

2. The combination, with the dustseparating passage and the curved deiiecting-wall m, of a spiral dust-detlecting flange, M, provided The horiis provided with a dellecting ring or collar, P, which is secured within the aboveareceiver, Q, which is secured to the under side of the portion d of of the elbow and strikes the with an overhanging lip, m', and a receiver, N, substantially as set forth.

3. The combination, with the spiral separating-passage B, of a concave deiectiug-wall, m, arranged at the inner end of said passage, a spiral iange, M, secured to the inner side of the wall m, and a receiver, N, substantially as set forth.

4. In a dnstcollector, the combination, with a downwardly-tapering dust-receiver, N, provided at its lower endl with a dust-exit and at its upper end with an exit for the purified air, of a deflector, O, secured centrally in the dustreceiver over the dust-exit, and separated from the wall of the receiver by an annular opening through which the dust descends, while air-currents,tending to ascend axially through the receiver, are intercepted by the dellector,

substantially as set forth.

5. The combination, with the separating airpassage B, surrounding dust-chamber E, and the receiver K, of the detleeting-wall m, provided with a spiral flange, M, a conical receiver, N, arranged within the main receiver K, and a delecting-cone, O, secu red iu the receiver N, substantially as set forth.

6. In a dust-collector, the combination, with the air-discharge spout D, of an annular deflector, l?, arranged in said spout, and a dustreceiver, Q, communicating with said spout below said annular deflector,whereby the dust, moving along the inner side of the air-spout, is directed into the dust-receptacle, while the inner body of purified air escapes through the opening in the annular delector, substantially as set forth.

7. In a dnstcollector, the combination, with the air-discharge spout D, of a dustreceptacle, Q, communicating with said spout by an opening, q, and a deflecting-collar, I?, secured in the spout and provided with an enlarged lip, p, extending over the opening q, substantially as set forth.

S. In a dust-collector, the combination, with the separating air-passage B, the main dustreceivcr K, and the air-discharge spout D, of a delector, l), secured in said spout, a dustreceiver, Q, communicating with the airspout D below the deflector l?, and a dischargepipe, q', extending from the receiver Q to the main receiver K, substantially as set forth.

Vitness my hand this 1st day of June, 1886.

BARNIM F. ORTMAN.

Witnesses:

JN0. J. BoNNnu, OsoAR SCHAUB.

IOO 

